Rare juvenile wild bettas from the Betta unimaculata complex, offered at approximately 0.5 inch. In the hobby these are commonly sold as Betta antuta, though reputable references also list them as Betta sp. “Antuta/Bulungan,” an apparently undescribed mouthbrooding betta from Bulungan / North Kalimantan, Borneo.
These Juvenile Betta antuta are a hard-to-find wild-type betta prized by collectors for their sleek shape, subtle earthy juvenile tones, and the impressive adult form they develop with age. Your fish are currently about half an inch, making them ideal for growers looking to raise out a truly uncommon species. Based on your photos, these are very young juveniles with developing finnage and early body patterning.
For accuracy, this fish is often marketed as Betta antuta, but hobby references commonly identify it as Betta sp. “Antuta/Bulungan”, a likely undescribed member of the Betta unimaculata complex from Bulungan, North Kalimantan, Indonesian Borneo. It is recognized as a paternal mouthbrooder and is associated with flowing highland stream habitats rather than stagnant blackwater setups.
As they mature, these fish can develop into a larger wild betta, with hobby references placing adult size around 10–12 cm and recommending cooler to moderate temperatures of about 21–27°C, pH 5.5–7.5, and soft to moderately soft water.
Key Features
- Rare juvenile Betta antuta / Betta sp. “Antuta/Bulungan”
- Approximate size: 0.5 inch
- Wild-type mouthbrooding betta
- Member of the Betta unimaculata complex
- Excellent choice for collectors of uncommon wild bettas
- Great grow-out project with strong future display potential
Recommended Listing Notes
- Sold individually at $34.99 each
- Juvenile fish; coloration and finnage will continue to develop as they mature
- Because these are very small juveniles, I would list them as unsexed unless confirmed
- Best suited for aquarists familiar with wild bettas and species-focused grow-out setups
Specifications
- Common Name: Betta Antuta
- Scientific Name: Betta sp. “Antuta/Bulungan”
- Also Sold As: Betta antuta
- Size at Sale: Approximately 0.5 inch
- Adult Size: Roughly 10–12 cm / 4–5 inches
- Temperament: Mild to moderate territorial behavior typical of wild bettas
- Diet: Carnivorous / insectivore-style diet; accepts varied prepared, frozen, and live foods in captivity
- Water Temperature: 21–27°C (69.8–80.6°F)
- pH: 5.5–7.5
- Origin: Bulungan, North Kalimantan, Borneo, Indonesia
- Breeding Type: Paternal mouthbrooder
